| Release the stuffing box from the diaphram by removing the inner flange bolts. Remove piston palm bolts. Attach the to distance pieces for guiding the stuffing box out without damaging the lower scraper rings. Take piston to tdc checking whether the distance piece is entering the stuffing box holes. Remove PC ring and grind out wear ridges in liner, also remove the deposits so that piston rings wont get damged. now clean lifting grove and attach the lifting claw tool. now the piston can be taken out using e/r crane.Now cover the cross head bearing using a protection cover. |
Since very small needle lift is obtained in the test equipment result in an unequal pressure distribution in the cut off shaft resulting in a hard contact in a small area along with high frequency oscillations, low lubricity of test oil will increase the chance of seizure. Full lift and high lubricity of heavy oil eliminates this risk of seizure during normal operation.( Always open and clean slide type valves before testing as cold sticky heavy oil along with small clearances can cause restriction in the movement of the spindle).
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